Gallery 2: 2013 Detroit Auto Show

The Acura MDX Prototype is introduced at the 2013 North American International Auto Show in Detroit, Michigan, January 15, 2013.

PHOTO: Stan Honda, AFP/Getty Images

The Acura NSX Concept is shown at media previews for the North American International Auto Show in Detroit.

PHOTO: Paul Sancya, AP

The Acura NSX Concept is shown at media previews for the North American International Auto Show in Detroit.

PHOTO: Paul Sancya, AP

The Acura MDX Prototype is introduced at the 2013 North American International Auto Show in Detroit, Michigan, January 15, 2013.

PHOTO: Stan Honda, AFP/Getty Images

The Acura MDX Prototype is introduced at the 2013 North American International Auto Show in Detroit, Michigan, January 15, 2013.

PHOTO: Stan Honda, AFP/Getty Images

The Acura MDX Prototype is introduced at the 2013 North American International Auto Show in Detroit, Michigan, January 15, 2013.

PHOTO: Stan Honda, AFP/Getty Images

The Acura MDX Prototype is introduced at the 2013 North American International Auto Show in Detroit, Michigan, January 15, 2013.

PHOTO: Stan Honda, AFP/Getty Images

The Ford Atlas concept pickup is unveiled at the North American International Auto Show in Detroit, Tuesday, Jan. 15, 2013.

PHOTO: Carlos Osorio, AP

Ford Motor Co. Executive Chairman Bill Ford, right, and President and CEO Alan Mulally stand next to the Ford Atlas concept pickup after its unveil at the North American International Auto Show in Detroit.

PHOTO: Carlos Osorio, AP

Nissan Resonance concept crossover is introduced at the 2013 North American International Auto Show in Detroit.

PHOTO: Stan Honda, AFP/Getty Images

Nissan Resonance concept crossover is introduced at the 2013 North American International Auto Show in Detroit.

PHOTO: Stan Honda, AFP/Getty Images

The Nissan Versa Note is revealed at the 2013 North American International Auto Show.

PHOTO: Bill Pugliano, Getty Images

A worker cleans the new Nissan Versa Note just prior to its reveal at the 2013 North American International Auto Show.

PHOTO: Bill Pugliano, Getty Images

The BMW 4 Series Coupe concept car is introduced at the 2013 North American International Auto Show in Detroit.

PHOTO: Stan Honda, AFP/Getty Images

The BMW 4 Series Coupe concept car is introduced at the 2013 North American International Auto Show in Detroit.

PHOTO: Stan Honda, AFP/Getty Images

Ian Robertson, BMW management board member in charge of sales and marketing, introduces the BMW M6 Gran Coupe at the 2013 North American International Auto Show.

PHOTO: Stan Honda, AFP/Getty Images

The Lexus IS 350 F Sport is introduced at the 2013 North American International Auto Show in Detroit.

PHOTO: Stan Honda, AFP/Getty Images

The Lexus IS 350 F Sport is introduced at the 2013 North American International Auto Show in Detroit.

PHOTO: Stan Honda, AFP/Getty Images

The Lexus IS 350 F Sport is introduced at the 2013 North American International Auto Show in Detroit.

PHOTO: Stan Honda, AFP/Getty Images

The Lexus IS 350 F Sport is introduced at the 2013 North American International Auto Show in Detroit.